What is
Soured milk is a food product, distinguished from spoiled milk, and is a general term for milk that has acquired a tart taste, either through the addition of an acid, such as lemon juice or vinegar, or through bacterial fermentation.
Bulgarian Yogurt is a mildly sour tasting yogurt made from full fat fresh milk. The yogurt is made by using the strains of "Lactobacillus Bulgaricus"- a bacteria unique to Bulgaria.